118555843821 has 8 divisors (see below), whose sum is σ = 161750608800. Its totient is φ = 77199154032.

The previous prime is 118555843801. The next prime is 118555843831. The reversal of 118555843821 is 128348555811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 118555843821 - 2²⁶ = 118488734957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118555843801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459518646 + ... + 459518903.

It is an arithmetic number, because the mean of its divisors is an integer number (20218826100).

Almost surely, 2^118555843821 is an apocalyptic number.

It is an amenable number.

118555843821 is a deficient number, since it is larger than the sum of its proper divisors (43194764979).

118555843821 is an equidigital number, since it uses as much as digits as its factorization.

118555843821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919037595.

The product of its digits is 1536000, while the sum is 51.

The spelling of 118555843821 in words is "one hundred eighteen billion, five hundred fifty-five million, eight hundred forty-three thousand, eight hundred twenty-one".